{
 "ocl_version": "0.1.0",
 "name": "Piper Road",
 "slug": "piper-road-3",
 "confidence": "A",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 29.534260005908664,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2336.0,
   "end_distance_m": 2338.0,
   "start_elevation_m": 472.9399337884746,
   "end_elevation_m": 473.5306189885928,
   "min_gradient_pct": -5.8244776191060055
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 28.958087485348944,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 2335.0,
   "end_distance_m": 2338.0,
   "start_elevation_m": 472.6618763640323,
   "end_elevation_m": 473.5306189885928,
   "min_gradient_pct": -5.533860431091853
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 26.884524701199553,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2334.0,
   "end_distance_m": 2339.0,
   "start_elevation_m": 472.4066923383682,
   "end_elevation_m": 473.7509185734282,
   "min_gradient_pct": -5.29966044753337
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 25.847924051433324,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2328.0,
   "end_distance_m": 2338.0,
   "start_elevation_m": 470.94582658344945,
   "end_elevation_m": 473.5306189885928,
   "min_gradient_pct": -5.0160677556777955
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 22.082651655066172,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2326.0,
   "end_distance_m": 2346.0,
   "start_elevation_m": 470.51664231314584,
   "end_elevation_m": 474.9331726441591,
   "min_gradient_pct": -4.2087846107361315
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 21.079491998563526,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2325.0,
   "end_distance_m": 2350.0,
   "start_elevation_m": 470.3590574887195,
   "end_elevation_m": 475.62893048836037,
   "min_gradient_pct": -3.941831649643291
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.86699939758796,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2326.0,
   "end_distance_m": 2376.0,
   "start_elevation_m": 470.51664231314584,
   "end_elevation_m": 479.9501420119398,
   "min_gradient_pct": -2.7393352973299443
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 16.647436358216623,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 2307.0,
   "end_distance_m": 2407.0,
   "start_elevation_m": 467.8007876266456,
   "end_elevation_m": 484.44822398486224,
   "min_gradient_pct": -0.7060593898521574
  }
 ],
 "shape": {
  "ascent_concentration": 0.396,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 149.0,
  "shape_class": "sustained"
 },
 "length_m": 2583.038337325167,
 "start_elevation_m": 380.70823652681054,
 "end_elevation_m": 496.07032786436105,
 "endpoint_gain_m": 115.36209133755051,
 "overall_gradient_pct": 4.466139339496304,
 "accumulated_ascent_m": 119.86091276956154,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 26.884524701199553,
   "start_distance_m": 2334.0,
   "end_distance_m": 2339.0,
   "midpoint_distance_m": 2336.5,
   "start_elevation_m": 472.4066923383682,
   "end_elevation_m": 473.7509185734282,
   "start_xy": [
    654665.7749748159,
    4456048.265373214
   ],
   "end_xy": [
    654669.0412853876,
    4456044.479714057
   ]
  },
  "max_10m": {
   "gradient_pct": 25.847924051433324,
   "start_distance_m": 2328.0,
   "end_distance_m": 2338.0,
   "midpoint_distance_m": 2333.0,
   "start_elevation_m": 470.94582658344945,
   "end_elevation_m": 473.5306189885928,
   "start_xy": [
    654661.8554021298,
    4456052.808164202
   ],
   "end_xy": [
    654668.3880232733,
    4456045.236845888
   ]
  },
  "max_20m": {
   "gradient_pct": 22.082651655066172,
   "start_distance_m": 2326.0,
   "end_distance_m": 2346.0,
   "midpoint_distance_m": 2336.0,
   "start_elevation_m": 470.51664231314584,
   "end_elevation_m": 474.9331726441591,
   "start_xy": [
    654660.5488779012,
    4456054.322427864
   ],
   "end_xy": [
    654673.614120188,
    4456039.179791238
   ]
  },
  "max_25m": {
   "gradient_pct": 21.079491998563526,
   "start_distance_m": 2325.0,
   "end_distance_m": 2350.0,
   "midpoint_distance_m": 2337.5,
   "start_elevation_m": 470.3590574887195,
   "end_elevation_m": 475.62893048836037,
   "start_xy": [
    654659.9234342462,
    4456055.101373603
   ],
   "end_xy": [
    654676.2271686455,
    4456036.151263913
   ]
  },
  "max_50m": {
   "gradient_pct": 18.86699939758796,
   "start_distance_m": 2326.0,
   "end_distance_m": 2376.0,
   "midpoint_distance_m": 2351.0,
   "start_elevation_m": 470.51664231314584,
   "end_elevation_m": 479.9501420119398,
   "start_xy": [
    654660.5488779012,
    4456054.322427864
   ],
   "end_xy": [
    654693.2166509946,
    4456016.469866766
   ]
  },
  "max_100m": {
   "gradient_pct": 16.647436358216623,
   "start_distance_m": 2307.0,
   "end_distance_m": 2407.0,
   "midpoint_distance_m": 2357.0,
   "start_elevation_m": 467.8007876266456,
   "end_elevation_m": 484.44822398486224,
   "start_xy": [
    654649.49235572,
    4456069.770818063
   ],
   "end_xy": [
    654713.4873661647,
    4455993.015696422
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -5.29966044753337,
   "start_distance_m": 2038.0,
   "end_distance_m": 2043.0,
   "midpoint_distance_m": 2040.5,
   "start_elevation_m": 453.6077144556175,
   "end_elevation_m": 453.34273143324083,
   "start_xy": [
    654484.9625919372,
    4456260.026440589
   ],
   "end_xy": [
    654489.9397267892,
    4456260.504068754
   ]
  },
  "min_10m": {
   "gradient_pct": -5.0160677556777955,
   "start_distance_m": 2037.0,
   "end_distance_m": 2047.0,
   "midpoint_distance_m": 2042.0,
   "start_elevation_m": 453.6566698183682,
   "end_elevation_m": 453.1550630428004,
   "start_xy": [
    654483.9671649667,
    4456259.930914955
   ],
   "end_xy": [
    654493.9214346709,
    4456260.886171286
   ]
  },
  "min_20m": {
   "gradient_pct": -4.2087846107361315,
   "start_distance_m": 2035.0,
   "end_distance_m": 2055.0,
   "midpoint_distance_m": 2045.0,
   "start_elevation_m": 453.73071256654254,
   "end_elevation_m": 452.8889556443953,
   "start_xy": [
    654481.9763110259,
    4456259.73986369
   ],
   "end_xy": [
    654501.8848504341,
    4456261.650376351
   ]
  },
  "min_25m": {
   "gradient_pct": -3.941831649643291,
   "start_distance_m": 2033.0,
   "end_distance_m": 2058.0,
   "midpoint_distance_m": 2045.5,
   "start_elevation_m": 453.7876915623174,
   "end_elevation_m": 452.80223364990655,
   "start_xy": [
    654479.9854570851,
    4456259.548812424
   ],
   "end_xy": [
    654504.8711313454,
    4456261.93695325
   ]
  },
  "min_50m": {
   "gradient_pct": -2.7393352973299443,
   "start_distance_m": 2028.0,
   "end_distance_m": 2078.0,
   "midpoint_distance_m": 2053.0,
   "start_elevation_m": 453.86801129394735,
   "end_elevation_m": 452.4983436452824,
   "start_xy": [
    654475.008322233,
    4456259.071184258
   ],
   "end_xy": [
    654524.453284492,
    4456260.293607847
   ]
  },
  "min_100m": {
   "gradient_pct": -0.7060593898521574,
   "start_distance_m": 2023.0,
   "end_distance_m": 2123.0,
   "midpoint_distance_m": 2073.0,
   "start_elevation_m": 453.82903698327846,
   "end_elevation_m": 453.1229775934263,
   "start_xy": [
    654470.0805757744,
    4456258.282559812
   ],
   "end_xy": [
    654550.8840483117,
    4456224.881855328
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 29.534260005908664,
   "start_distance_m": 2336.0,
   "end_distance_m": 2338.0,
   "midpoint_distance_m": 2337.0,
   "start_elevation_m": 472.9399337884746,
   "end_elevation_m": 473.5306189885928,
   "start_xy": [
    654667.0814990446,
    4456046.751109551
   ],
   "end_xy": [
    654668.3880232733,
    4456045.236845888
   ]
  },
  "max_3m": {
   "gradient_pct": 28.958087485348944,
   "start_distance_m": 2335.0,
   "end_distance_m": 2338.0,
   "midpoint_distance_m": 2336.5,
   "start_elevation_m": 472.6618763640323,
   "end_elevation_m": 473.5306189885928,
   "start_xy": [
    654666.4282369303,
    4456047.508241382
   ],
   "end_xy": [
    654668.3880232733,
    4456045.236845888
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "review": [],
  "extent": []
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:26917",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/usa/pa-west/USGS_1M_17_x65y446_PA_WesternPA_2019_D20.tif"
  ],
  "calculated_at": "2026-09-07T10:41:38+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "data/cache/pbf/pennsylvania-2026-09-07-batch-band2.osm.pbf",
  "osm_snapshot": "",
  "run_id": "pa-run4-260907",
  "elevation_provider": "USGS 3DEP (The National Map)",
  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
  "elevation_dataset": "USGS 3DEP 1 m DEM, PA_WesternPA_2019_D20 (collected 2020)",
  "elevation_tile_ids": [
   "x65y446"
  ],
  "climb_origin": "discovered",
  "canopy_check": "unavailable \u2014 EPT corridor failed: PA_WesternPA_2019_D20: HTTP Error 404: Not Found",
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Ligonier",
  "county": "Pennsylvania"
 }
}